Re: [PATCH 0/5] uprobes: fix fork() with the pending ret-probe(s)

[Oleg Nesterov]

On 10/13, Oleg Nesterov wrote:
>
> Please review, this series fixes the serious bug reported by
> Martin and David and cc's stable. See the changelog in 5/5.

Forgot to mention...

This probably needs another patch to handle the special case, vfork().
In this case it would be more correct to dup return_instances but
(obviously) avoid dup_xol_area.

However I think this is not that important, the child should not "unwind"
the stack if it shares mm/stack with its parent, otherwise it can corrupt
the parent's stack.

So I think that this change (which needs to pass "clone_flags" to
uprobe_copy_process) is not the stable material. But I'll update the
changelog in 4/5 to explain that "mm == t->mm" check should be updated.

Oleg.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/